STMicroelectronics STDRIVE121/141/181 Half-Bridge Gate Drivers
STMicroelectronics STDRIVE121/141/181 Half-Bridge Gate Drivers are dual (STDRIVE121), quad (STDRIVE141), or octal (STDRIVE181) half-bridge gate drivers dedicated to control four (STDRIVE121), eight (STDRIVE141), or sixteen (STDRIVE181) N-Channel MOSFETs. An SPI frame configures and controls half-bridges during active mode. SPI status registers provide high-level diagnostic information, including supply-voltage monitoring, charge-pump voltage monitoring, temperature warnings, and overtemperature shutdown.
Each gate driver independently monitors its external MOSFET drain-source voltage for fault conditions. A more efficient gate-current control for the external MOSFETs, called “three-stage gate current,” reduces switching losses and optimizes electromagnetic interference (EMI).
The devices integrate a full range of protection features, including drain-source monitoring for short-circuit detection, overtemperature warning and shutdown, a timeout watchdog for MCU control, and detailed off-state diagnostics via SPI. The VFQFN32L package with an exposed pad houses both the STMicroelectronics STDRIVE141 and STDRIVE121 half-bridge gate drivers, while a larger VFQFN48L package contains the STDRIVE181.
Features
- Operating voltage from 6V to 28V
- Quad (STDRIVE141), dual (STDRIVE121), or octal (STDRIVE181) half-bridge, or single (STDRIVE121), dual (STDRIVE141), or quad (STDRIVE181) H-bridge, gate driver
- Adaptive MOSFET gate control
- Three-step gate control of external HS/LS
- Programmable gate current up to 120mA
- Two PWM inputs (up to 50kHz)
- Low consumption mode (1.05µA)
- Serial peripheral interface (SPI), 24 bits
- Full range of protections
- VDS monitoring
- Drain-source monitoring for short circuit detection
- Overtemperature warning and shutdown
- Timeout watchdog for MCU control
- Detailed off-state diagnostic (open load, short circuit to supply or short circuit to GND) via SPI
Applications
- Industrial automation
- CNC machines
- 3D printers
- Positioning systems
- Drones gimbal
- Robot vacuum cleaner and pool cleaner
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